Hagen Brothers farms,Goodrich ND | Info on the ripple tin is not in the IH book, it is for the aftermarket air foil chaffer.. My old 1480 has little air getting to the front of the chaffer, just the way the stock air distribution is. This causes heavy stuff falling off the auger bed to fall right through the front of the chaffer where there is little air to resist it.
Harvest services, the outfit that makes my air foil chaffer knows that and supply's what is called ripple tin. Ripple tin is a solid sheet metal plate with that same stepped shape as the chaffer surface, so it fits tightly on the surface where you attach it with pop rivets , plus the ripples "walk" the material to the chaffer rear. The ripple tin on the front 12 inches of the chaffer prevents this stuff from falling through that front air starved area and makes more air available for the rear 3/4 of the chaffer. A quick fix is to cut a cardboard sheet, 12 inches high and as wide as the chaffer, which you attach over the front foot of the chaffer with thin wire. The cardboard will last quite a while and allows you to see if a genuine ripple tin will help your situation. We have them on both of our combines, and it made a dramatic difference in the SF sample.
Another thing is if your getting too much heavy SF seeds in the return, is that you may have too much air trapped under the bottom sieve which is blowing seeds over into the return. The fix for that is to remove the bottom sieve and remove the front 5 rows of sieve fins. This creates a hole that directs less air under the bottom sieve and more under the AF chaffer. It was very hard for me to trust the advice from Harvest services and take a grinder to a brand new sieve that first time, but it works well. That bottom sieve is mounted so far forward that nothing falls on the front portion where those fins used to be anyhow.
Edited by Jon Hagen 10/26/2007 13:13
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sunflower settings for 1480?Rotor /fan speed, Hints?
